5300xl to 2626 Fiber Link

Maybe you can help me out with this one. When ever I try and put the 5300xl and one of the 2626 with a fiber Gbic it seems to lock up the switches. What I mean is the lights go solid, instead of blink with data activity and you cannot get out over the switches. When I unplug the link. The switches operate @ normal.

I am using the J4858B ProCurve Gigabit SX-LC Mini GBIC @ each end and it seems to no work. They seem to lock each other up.

Re: 5300xl to 2626 Fiber Link

Not that I'm aware of. The way the "lower school" is set up is one building in the middle with 3 satellite buildings connecting them with fiber. Each fiber connection has a 2626 w/ a fiber Gbic going back to the 5300xl. In this case the one for the Math dept. locks up both switches. It seems anytime I try and put a fiber Gbic connection in the 5300xl it locks up the system.

Re: 5300xl to 2626 Fiber Link

It does sound like a loop, even if your description of the network looks like there shouldn't.

Are you running spanning tree?

If you say lockup, do you mean you cannot telnet to the switch? Or did you also try using the console to check?Chances are the console still works.If it does, use the console to find out more info about the problem. (show interface etc).